Particle Deborah number

The term Peclet number is common in the suspension literature, while the corresponding quantity is usually called the Deborah number or Weissenberg number in tbe polymer literature. From Eqs. (6-30) through (6-33) we find, in general, for a solvent of viscosity 1 cP, that Drd /b, where b — d or L) is the particle s longest dimension in units of pm, and is in sec. Since typical shear rates are in the range 10 > 10 sec , ... 

Cl screw center-to-center distance D deformability parameter d droplet diameter d equilibrium droplet diameter De Deborah number do initial diameter of droplet Dp particle diffusion coefficient dPidz pressure gradient E energy of mixing e relative flight width = e/(7iDsSincp)... 

FIG. 4 Extent of variation of the sum of the surface charge and the Stem charge as a function of the dimensionless particle distance at various Deborah numbers for the Stern counterions. 

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